spaulding



UNIT-ED .STATES PATENT-N OFFICE;

JOHN SPAULDING, oF sAN FRANcrsco,cALIFoHNIA.

estimatif-COLLECTOR Fonsl-EAlvI-eon;Ens.`

SPECIFICATION forming' partof LettersPatent No. 276,493, dated April 24, 1883.

Application tiled December 9, 1882. 4(No model.)

, of this specification, and in which- Figure l is a sectional side elevation `ot' my improved sediment-collector as applied to a steam-boiler. Fig. 2 is a vertical section through the boiler, sediment-collector, and fire-box. Fig. 3 is a sectional plan viewot' the lower end of the boiler.

Similar letters of reference are used to indicate like parts throughout the several figures.

To the bottom of the boiler-sheet I connect the rectangular sediment-collector A by means of bolts or rivets, which pass through the hold-` ing-flanges of the collector and boiler-sheet. The collector extends longitudinally from the front of the boiler back to the bridge-wall B, and vertically below the grate-bars, as shown in Fig. 2. A series of gas-pipes, O, connect with the interior of the boiler by means of screwthreads, the inner ends of which are ush with the interior face of tbeboiler, while the lower ends of these pipes extend to near the bottom of the collector, whereby a constant water communication is had between the boiler and sediment-collector. Intermediate, however, between these connecting-tubes C, I make holes or openings D through the boiler-sheet, which lead into the collector, whereby a greater circulation of water from the boiler to the co1- lector is had, and an enlarged area for the scum and temporarily-oating crystals of salt and solid matter topass down into the collector. The chamber of the sediment-collector is made wider at the bottom than at the top, or otherwise tapering from its juncture with the boiler to the bottom thereof, and in this chamber I place a three-anged rake or scraper, E, with the inner end stepped in the collecting-chamber, and the outer end extending through the tront portion ot' the chamber wall or` plate, at which point it is provided with a square head to receive a wrench or key, by which. the rake is rotated and adapted to stir up the contents of the chamber and prevent by agitation the sediment from collectingor settling in the bottom ot' the chamber in such quantity as to obstruct the opening in the draw-oft' pipe and vcock F, which' latter connects with the chamber near the front lower end, and passes beneath the furnace and ont at one side, as shown.

It should here be observed that the boiler is set at an angleot inclination to the front inthe usual way.

By this construction it will be seen that the main portion of the sediment-collector is snrronnded by the lire and heat of the furnace, while the lower end is below the lire-grate, and that a constant circulation between the boiler and collector is had without any violent ebullition of the water contained in the collector.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

The combination, with a steamboiler having a sediment collector, A, depending therefrom in front of the bridge-wall, of a series of pipes, C, passing vertically into said collector and communicating with the boiler, the scraper or agitator E, and the blow-oil'1 pipe F, substantially as shown and'described.

In testimony that I claim the foregoing I have hereunto set my hand and seal this 24th day of November, 1882.

JOHN SPAUIDING. [L

Witnesses:

C. W. M. SMITH, WILMER BRADFORD. 

